Finding the Fourth Proportional to 385,382,351.25, 531,828,229.14 and 209,170,410.99
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Solution
The fourth proportional to 385,382,351.25, 531,828,229.14 and 209,170,410.99 is: 288,655,484.36
Step by Step Solution
- Step 1: Write the proportion equation
385,382,351.25 : 531,828,229.14 = 209,170,410.99 : x - Step 2: Convert to fraction form
385,382,351.25/531,828,229.14 = 209,170,410.99/x - Step 3: Cross multiply
385,382,351.25x = 531,828,229.14 × 209,170,410.99 - Step 4: Simplify right side
385,382,351.25x = 111,242,729,265,297,696 - Step 5: Solve for x
x = 111,242,729,265,297,696/385,382,351.25 - Step 6: Final answer
x = 288,655,484.36
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.